1/2+1/4+1/8+1/16+1/1/32+1/64=?
问题描述:
1/2+1/4+1/8+1/16+1/1/32+1/64=?
答
1/2+1/4+1/8+1/16+1/32+1/64
=1/2+1/4+1/8+1/16+1/32+1/64+1/64-1/64
=1/2+1/4+1/8+1/16+1/32+1/32-1/64
=...
=1-1/64
=63/64.